printer-physical-offset

Arguments:
printer-stream

Returns a position that indicates the "physical" margins outside of
which a printer cannot draw. The x coordinate of the position is the
device's left hardware margin, and the y coordinate is the top margin.
The right and bottom margins will be the same as the left and top
margins respectively.

The values are measured in the device's native pixel size, and will
typically indicate a quarter of an inch. So for a laser printer whose
native resolution is 600 pixels per inch, the position (150 150) would
be returned if it can draw anywhere except within a quarter of an inch
of the edge of the paper.

The important thing to remember is that anything that is drawn on a
printer stream will be positioned relative to this hardware margin.
That is, drawing something at position (0 0) will typically draw it at
a quarter inch from the edge of the paper.